Examples of struct field tags and their meanings:

// Decode matches this field with "myName" header column.
Field int `csv:"myName"`

// Decode matches this field with "Field" header column.
Field int

// Decode matches this field with "myName" header column and decoding is not
// called if record's field is an empty string.
Field int `csv:"myName,omitempty"`

// Decode matches this field with "Field" header column and decoding is not
// called if record's field is an empty string.
Field int `csv:",omitempty"`

// Decode ignores this field.
Field int `csv:"-"`

// Decode treats this field exactly as if it was an embedded field and
// matches header columns that start with "my_prefix_" to all fields of this
// type.
Field Struct `csv:"my_prefix_,inline"`

// Decode treats this field exactly as if it was an embedded field.
Field Struct `csv:",inline"`